diff --git a/.eslintrc b/.eslintrc
index ca3ca2a7da5..03beb285783 100644
--- a/.eslintrc
+++ b/.eslintrc
@@ -88,7 +88,7 @@
         "no-fallthrough": "off",
         "no-invalid-this": "off",
         "no-multiple-empty-lines": "off",
-        "no-new-func": "off",
+        "no-new-func": "error",
         "no-new-wrappers": "error",
         "no-redeclare": "off",
         "no-return-await": "error",
diff --git a/src/harness/fourslash.ts b/src/harness/fourslash.ts
index bac70e8b7a0..80fb27508d9 100644
--- a/src/harness/fourslash.ts
+++ b/src/harness/fourslash.ts
@@ -600,7 +600,7 @@ namespace FourSlash {
                 throw new Error("Expected exactly one output from emit of " + this.activeFile.fileName);
             }
 
-            const evaluation = new Function(`${emit.outputFiles[0].text};\r\nreturn (${expr});`)(); // tslint:disable-line:function-constructor
+            const evaluation = new Function(`${emit.outputFiles[0].text};\r\nreturn (${expr});`)(); // eslint-disable-line no-new-func
             if (evaluation !== value) {
                 this.raiseError(`Expected evaluation of expression "${expr}" to equal "${value}", but got "${evaluation}"`);
             }
diff --git a/src/harness/harness.ts b/src/harness/harness.ts
index f03103d0239..029ff5c593d 100644
--- a/src/harness/harness.ts
+++ b/src/harness/harness.ts
@@ -28,7 +28,7 @@ var assert: typeof _chai.assert = _chai.assert;
     };
 }
 
-var global: NodeJS.Global = Function("return this").call(undefined); // tslint:disable-line:function-constructor
+var global: NodeJS.Global = Function("return this").call(undefined); // eslint-disable-line no-new-func
 
 declare var window: {};
 declare var XMLHttpRequest: new() => XMLHttpRequest;